Car vibrator



C. G. MATSON Dec. 31, 1957 CAR -VIBRATOR 3 Sheets-Sheet 1 Filed Dec. 14,7, 1955 Dec. '31, v1957 Q G, MATSON 2,818,184

CAR VIBRATOR s sheets-smet 2 Filed nec.v "i4, 1955 IN VEN TOR. Cad (1T/Hakan,

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Dec. 31,' 1957- v c. G. MATsoN 2,818,184

CAR VIBRATOR Filed D66. 14, 1955 I 3 .Sheets-Sheet 3 INVENTolL United States Patent O CAR vIBRAToR Carl G. Matson, Kewanee, Ill., assignor to Vibrolator Manufacturing Co., a corporation of Illinois Application December 14, 1955, Serial No. 553,137

13 Claims. (Cl. 214-64.2)

The present invention relates to car vibrators, particularly of the type for vibrating the body of a hopper-bottom railroad car to facilitate the dumping of its load. Such cars are used generally for the transport of coal, ore, stone, gravel, sand and the like. Contents of such nature may become packed, jammed or frozen, so that gravitational dumping through the hopper bottom will not occur, or only occurs in limited quantities. Still further, even where the contents are not packed or frozen, the gravitational discharge of the material in a loosened state will only continue until the pile of material remaining in the car reaches its angle of repose, which angle of repose varies with different materials.

In order to eect the dumping of such loads, the current practice now is to place one or more men in the car with appropriate tools, who laboriously spend much time loosening the material for discharge through hopper d-oor openings, or shoveling the piles of material into the hopper door openings.

The general object of the present invention is to provide a simple, inexpensive and efiicient car vibrator adapted to facilitate the dumping `of loads from such cars.

Another object lof the invention is to provide an improved car vibrator which can be employed in the average coal yard, materials yard or the like without the necessity of installing overhead cranes, overhead track or other special equipment for supporting the car vibrator. My improved vibrator can be quickly and easily moved into operative position alongside the track where the dumping is to take place.

Another object of the invention is to provide an improved car vibrating machine comprising a vibrator head which is held forcibly pressed against the side of the car under extremely high pressures obtained from a hydraulic ram, constituting part of the machine.

Another object of the invention is to provide a vibrating machine `of the above general description in which the reaction pressures from the hydraulic ram are transmitted to the track on which the car is standing through an anchoring device which has anchored attachment to one of the rails of the track.

Another object of the invention is to provide a car vibrator which is adapted to occupy a stationary position alongside the track, and which is so constructed and operated that the dump car can be progressively advanced relatively to the car vibrator so as to have the vibrator act on the dump car at different points along its length. To this end, the machine has an improved point of anchored attachment to the track, which is located below the wheel bearing surface of the track, so that the car can be advanced along the track without having to release `and re-engage the point of anchored attachment to the track to permit movement of the car or; to permit the car wheels to pass. Also, the vibrating head is mounted on the supporting base for quick and easy movement between an advanced operative position in Frice contact with the side :of the car and a retracted inoperative position out of contact with the side of the car.

Another object of the invention is to provide a car vibrator in the form of a self-contained portable unit ernbodying its own power plant for driving the vibrator head and for developing hydraulic pressure for operating the hydraulic ram.

Another object is to provide such a machine having vertically displaceable transport wheels which may be shifted to inoperative positions when the machine is placed on the ground in a car vibrating position.

Other objects, features and advantages of the invention will be apparent from the following detail description of one preferred embodiment thereof. In the accompanying drawings illustrating such embodiment:

Figure 1 is a side elevational view of my improved car vibrator, illustrating in diagrammatic outline a hopper bottom dump 1car being vibrated thereby;

Figure 2 is an end elevational View of the vibrator;

Figure 3 is a plan view of the same;

Figure 4 is a detail view showing the mounting of the vibrator head in its box-like guide frame;

Figure 5 is an axial sectional view of the vibrator head; and

Figure 6 is an end view of the vibrator head, partly broken away in section.

Referring first to Figure 1 the car vibrator designated 1() in its entirety, is shown as being located in position to vibrate a hopper bottom railroad dump car 11 standing on the railroad rails 12, 12 secured to track ties indicated in dotted lines at 14.

The vibrator parts are assembled on a base structure 15 comprising a long horizontally extending channel beam 16 which is preferably arranged with its side flanges 17 facing downwardly, as shown in Figure 2. This channel beam 16 forms the backbone of the vibrator assembly, and secured to the outer sides of the flanges 17 by welding, bolting or riveting are two vertically extending spaced side plates 1S, 18. Welded to the bottom edges of the side plates 18 and flanges 17 is a horizontally disposed base plate 20 which extends laterally outwardly a substantial distance beyond each side plate 18 to form a relatively wide flat supporting base for resting on the ground. Welded to the rear edges of the upright side plates 1S, 1S and to the rear edge of the base plate 20 are vertically disposed transverse gusset plates 22, 22 which stiften the upper portions yof the side plates 18 and also the outer edges of the base plate 20. A stiftening bar or plate 24 is welded between the upper rear edges of the side plates 18.

At its forward end the base plate 20 is formed with inwardly inclined side edges 2d' which converge to the sides of the longitudinal channel member 16. The forward edges of the side plates 1d are also sloped downwardly, as indicated at 1S (Figure l), so as to clear the side sill and body of the dump car 11. The longitudinalI base channel 16 extends forwardly a substantial distance beyond the front edges of the side plates 18, which forwardly extending portion of the channel constitutes an anchoring tongue 16 that is adapted to effect anchored attachment to the track 12, 12. The base plate 20 also has a forwardly extending straight sided tongue portion 20 (Figure l) which is welded to the bottom edges of the side flanges 17 of the channel tongue portion 16. Preliminary to placing the car vibrator 10 in operative position, the dirt or ballast stone is first dug out from between two of the track ties 14 substantially at the desired point of location of the car vibrator. This anchoring tongue 16 is then slid under the track rails 12, 12 through the cleared space between the ties substantially into the position shown in Figure l. Welded to the outer end of the channel tongue 16' is a projecting U- shaped clevis or anchoring eye 26. When the channel tongue 16' is properly positioned, this anchoring clevis projects just beyond the far rail 12, in position to receive an anchoring stake 28 which is driven down through the clevis with the upper end of the stake abutting against the base flange of the far rail 12. Thus, the anchoring tongue 16' is anchored to the track rail 12 against vibratory stresses tending to move the car vibrator in a direction away from the side of the car 11.

To facilitate the movement of the car vibrating device from one car dumping location to another, it is provided with a pair of vertically swinging rear wheels 36 that may be swung into and out of operative position. These rear wheels are journaled on crank shaped ends 32 of transverse rear axle 32 which is rotatably supported in mounting brackets 33 secured to the transverse rear gusset plates 22, with the wheel bearing crank ends of the axle projecting beyond the side edges of the base plate and gusset plates 22. When the wheels are swung up to their inoperative positions, shown in full lines, they are raised above the bed plate level of the machine. In this position, the vertically extending portions of the axle cranks 32 are locked in their upwardly extending positions by engaging between upper pairs of lugs 34 projecting rearwardly from the gusset plates 22, the axle cranks being locked between these lugs by removable pins 34a passing through apertures in the outer ends of the lugs. When the wheels are swung down to transport position, shown in dotted lines, the vertically extending portions of the axle cranks 32' are locked in their lower positions by engaging between lower pairs of lugs 34', in which positions they are held by the retaining pins 34a passing through apertures in these lower lugs. When the machine is thus converted for transport from one car dumping location to another, the anchoring tongue 16 with its anchoring clevs 26 functions as a convenient draft tongue for pulling the vehicle. Ordinarily, the ground level 31 at the car dumping site is approximately even with the top or intermediate levels of the track ties 14, and for use in these situations the wheels are swung upwardly to their inoperative positions so that the base plate 20 of the car vibrating unit will rest directly on the ground level 31 when the unit is in operative position at the dumping site. However, in situations where the ground level extending from the side of the track drops down appreciably from the level of the ties, as indicated in dotted lines at 31 in Figure l, the wheels 30 may be left in lowered position for possibly supporting, either' entirely or partially, the rear end of the car vibrating unit.

The vibrator head is designated 35 in its entirety, and preferably comprises a power driven vibrator unit which is adapted to be pressed against the side of the dump car 11, as shown in Figure l. This vibrator head 3S is movably mounted in a box-like rear guide portion 36, relatively to which the head 35 has a cushioned front and rear sliding motion, and also has a limited up and down tilting motion, as will be later described in connection with Figure 4. The rear guide portion 36 is secured to the upper end of a horizontally swinging arm 38 which extends down between the spaced side plates 18, 18 and is pivotally supported at its lower end on a transverse pivot pin 39 extending through the side plates 18, 1S (Figure 2). The swinging arm 38 is preferably in `the form of a channel with the side flanges at its upper end embracing and being welded to the sides of the guide portion 36, and with the side flanges at its lower end receiving the transverse Pivot pin 39.

Mounted for swinging the arm 38 is a hydraulic ram 40 which is disposed between the side plates 18, 18 and which comprises a cylinder 41 having a piston therein from which extends a piston rod 42. As shown in JFigure 3, the outer or rear end of the cylinder 41 has a projecting pivot lug 44 which is pivotally mounted on a horizontal pivot pin 45 that has its ends mounted in pivot lugs 46 projecting forwardly from a channel-shaped bracket 47. This channel-shaped bracket 47 is welded rbetween the rear ends of two mounting side plates 48, 4S which lie between the rear ends of the two main frame side plates 18, 18, and which are secured thereto by bolts, riveting or welding. Thus, the rear end of the cylinder 41 is pivotally connected to the rear end of the frame plates 18, 18 for vertical swinging movement therebetween.

The front end of the piston rod 42 is formed with a pivot eye 51 which is pivotally connected by a horizontal pivot pin 52 with two spaced pivot lug brackets 53 that are welded to the web portion of the channel-shaped mounting arm 38. Thus, the outer or rear end of the piston rod 52 is pivotally connected with the vibrator mounting arm 38, whereby outward extension of the ram 40 swings lthe vibratory head 35 up against the side of the car, and rearward contraction of the ram swings the vibratory head backwardly away from the car.

Mounted on one of the main frame side plates 18 is a power plant 55, preferably in the form of an internal combustion engine, although it might be an electric motor. This power plant 55 is arranged to drive a hydraulic pump ,56 that supplies liquid under pressure to the hydraulic ram 40, this drive comprising a sheave 58 on the outer end of the engine crank shaft 59, which sheave drives a belt 61 passing around a sheave 62 on the pump shaft. Two hoses 64 and 65 connect the hydraulic pump 56 with opposite ends of the ram cylinder 41. Mounted on the pump 56 is a reversing valve for reversing the inflow and outflow in the two hoses 64 and 65 so as to extend or retract the hydraulic ram 40, such reversing valve being actuated by hand lever 67 mounted at the pump end of the assembly. The power plant 55 also drives the vibrator head 35, and to this end there is mounted on the inner end of the engine crank shaft 59 an inner drive sheave 69 around which passes a belt 71 which extends upwardly for passage around an upper sheave 73 mounted on the shaft 73 of the vibrator head. The drive to the vibrator head 35 is controlled by a clutch interposed between the engine crank shaft 59 and the inner drive sheave 69, which clutch is controlled by a manually actuated lever 74 extending up vertically in line with the crank shaft 59. The axis of the engine crank shaft 59 and inner drive sheave 69 coincide with or are in close proximity to the axis of the pivot shaft 39 around which the vibratory head 35 swings under the action of the hydraulic ram 40, so that the upwardly extending drive belt 71 remains under substantially constant tension, irrespective of the position occupied by the swinging arm 33. Another belt drive 75 from the engine crank shaft may be arranged to drive a generator or starter motor having electrical connection with the storage battery 76.

The hydraulic pump 56, power plant 55 and storage battery 76 are all mounted on a vertically adjustable platform 77. The outer or pump end of this platform is pivotally supported on a round bar 78 which projects outwardly from a welded attachment to the adjacent side plate 18, this welded attachment being reinforced by welded diagonal gusset plates 79. The adjacent end of the platform 77 is pivotally supported on this round bar 78. Extending vertically downwardly through the other end of the platform 77 is an adjusting screw 551 which has its lower end adapted to abut the top side of a second rod 82 which projects outwardly from a welded attachment to the adjacent side plate 15, this welded attachment being likewise reinforced by welded diagonal gusset plates 83. Compression springs S4 and 85 are mounted on the rod `82 above and below the platform 77, and have their' outer ends bearing against nuts 86 screwing over threads on the adjusting screw itl, by the adjustment of geredetE which nuts the compression of the springs 84 and 85 may bev adjusted. Thus, the normal position of the platform 77 and the tension of the vertical driving belt 71 may be adjusted by the adjustment of these nuts 86.

Referring to Figure 4, the vibratory head 35 has a square outline, and has a loose sliding tit in the square outline of the box-like guide 36. A bolt 88 extends rearwardly from the vibratory head and passes loosely through a hole 89 in the rear wall of the box-like guide 36, receiving a nut 90 on its outer end. This bolt 88 merely serves to limit forward displacement of the vibratory head 35 so that it cannot become entirely detached from the box-like guide 36, but the bolt does not limit the freedom of the vibratory head 35 to tilt vertically a limited amount in the box-like guide. Cushioning means, preferably in the form of inner and outer compression springs 91, 91', are confined in the box-like guide 36, against which the Vibratory head 35 reacts when the head is thrust forwardly against the side of the car under the pressure of the ram 40. This ram is capable of holding the Vibratory head 35 pressed against the side of the car 11 under extremely heavy pressures, pressures of 10,000 to 20,000 pounds being typical, and the springs 91, 91 are capable of resiliently sustaining these pressures. A rubber sleeve 92 of rectangular outline affords a laterally cushioned sliding support for the vibrator head 35 in the guide housing 36. A metallic sleeve 93 of rectangular cross-section is welded to the outer base plate 35 of the vibrator head, and is formed with an outwardly projecting flange 93 at its outer end. The rubber sleeve 92 surrounds this metallic sleeve 93, between the base plate 35 and ange 93', and has a sliding it in the guide housing 36. This rubber sleeve enables the vibratory head 35 to tilt or cock to different angles relatively to the guide housing 36, to enable the vibratory head to adapt itself to dilferent widths of cars, or to cars having diiferent degrees of sidewise tilt or heeling under `the action of the vibrator. Cars vary as much as two feet in their transverse width. Also, the pressure of the hydraulic ram 40, which may be in the neighborhood of 10,000 to 20,000 pounds, is borne sidewise by the car body through the truck springs, (indicated in dotted lines at 13 in Fig. l) with dilerent degrees of sidewise tilt or heeling of the car bodies of different cars under the action of the car vibrator. It will be seen that the vibrator head 35 acts between the pressure of the compression springs 91, 91 at one end, and the pressure of the car truck springs 13 at the other end. The compression springs 91, 91 are initially prestressed by tightening up the nut 90 an inch or so, leaving approximately two inches of travel when the vibrator head is pressed against the side of the car.

An impact or wear plate 94 having a horizontally ribbed front face is bolted or otherwise secured to the front end of the vibratory head 35. The freedom of the vibratory head 35 to have a limited vertical tilting movement relatively to the box-like guide 36 enables the ribbed face of the impact plate 94 to bear ush against the dat side of the railroad dump car 11, even though the pivoted mounting arm 38 extends upwardly at slightly different angles when the device is vibrating different cars.

Various forms of vibrator heads 35 may be employed, the type shown in Figures 5 and 6 being preferable. This comprises a housing 95 of rectangular or squareshaped outline having open ends which are normally closed by end heads 96 and 97. These end heads each have a narrow circular centering flange or lip 98 which is adapted to engage a centering ange 99 formed at each end of the housing. Through bolts 101 pass through the corners of the housing and through the end heads 96 and 97 for holding the end heads on the ends of the housing 95 in the properly centered relation defined by the centering flanges 98 and 99. Passing axially through bosses 102 projecting from the end heads 96 and 97 is the vibrator drive shaft 74 previously described. The holes 103 in these bosses are preferably made slightly larger V6 than the diameter of the shaft 74 so that under normal operating conditions of the vibrator the shaft 74 remains out of contact with the bosses 102.

Mounted on the shaft 74 is a cylindrical mounting hub 104 which is secured to the shaft 74 by transverse pin 105. Bolted to the opposite sides of this mounting hub are the hubs 106 of two eccentric vibrators 107. Transverse bolts 108 pass through all three hubs 104 and 106, 106 for causing them to rotate together, and for also causing them to transmit vibration from the eccentric vibrators 107 `to the central mounting hub 104, supplementing the vibration transmitting action of the shaft 74. Anti-friction bearings 109 are mounted on the shaft 74 between the end heads 96 and 97 Vand the hubs 106 of the eccentrics. These anti-friction bearings are of the type adapted to have their load bearing value acting primarily in end thrust.

As shown in Figure 6, the two vibratory eccentrics 107 are each formed with eccentric sectors 111 which project radially from the hub portions 106 over a segment or span of approximately 180. As shown in Figure 5, these eccentric segments 111 also extend in an axial direction from their respective hubs 106 through a distance almost equal to the thickness of the thrust bearings 109.

The vibrations generated by the eccentrics 107 are transmitted radially to the housing through a roller bearing 114 which is interposed between the cylindrical outer surface of the `central hub 104 and the cylind-rical inner surface of an annulus 118 projecting inwardly from the center of the housing 95. This roller bearing 114 comprises an inner race 120 preferably having a tight lit over the central hub 104, and an outer race 122 bearing in the annulus 118. Mounted between these races are the vibration transmitting rollers 124 which are held in place by the roller cage 126. The use of a roller type of bearing 114, and the large diameter of this bearing, alford a large area of bearing surface for transmitting the vibrations from the eccentrics 107 to the housing 95.

Extending outwardly through the walls of the housing 95 are air vents 128 having air filtering screens 130 therein, and extending outwardly through the end heads 96 and 97 are similar air vents 132 having air filtering screens 134 therein. These air vents avoid overheating of the vibrator head. The vibrator is generally operated at speeds ranging between one thousand and three thousand revolutions per minute.

While I have illustrated and described what I regard to be the preferred embodiment of the invention, nevertheless it will be understood that such is merely exemplary and that numerous modifications and rearrangements may be made therein without departing from the essence of the invention.

I claim:

1. In a vibrator for vibrating railroad dump cars in the dumping operation, the combination of a base adapted to occupy a stationary position alongside the railroad track at the point of dumping a vertically swinging arm pivotal- 1y connected at its lower end to said base, a power driven vibrator head mounted on the upper end of said arm, a hydraulic ram connected between said base and said arm for moving said vibrator head into and out of engagement with the side of the dump car and for holding the vibrator head forcibly pressed against the 'side of the car in the vibrating operation, and anchoring means extending from said base below the rails and between the ties of the track for effecting anchored connection of said base to one of said rails for transferring the reaction force of said hydraulic ram to the track.

2. In a vibrator for vibrating railroad dump cars in the dumping operation, the combination of a base adapted to occupy a stationary position alongside the railroad track at the point of dumping, a vertically swinging arm having its lower end pivoted to said base, a power driven vibrator mounted on the upper end of said arm for swinging movement into and out of engagement with the side of the dump c ar, said vibrator comprising a shaft, a driven sheave mounted on said shaft, a hydraulic ram pivotally connected between said swinging arm and said base for causing swinging movement of said arm, a platform having pivoted mounting at one end on said base and having its other end adapted for up and down tilting, a power plant on said platform, a hydraulic pump on said platform driven by said power plant, a drive sheave mounted adjacent the tilting end of said platform, a belt connecting said drive sheave with the driven sheave of said power driven vibrator, and means for adjusting the vertical position of the tilting end of said platform.

3. In a vibrator for vibrating railroad dump cars in the dumping operation, the combination of a base adapted to occupy a stationary position alongside the railroad track at the point of dumping, anchoring means for anchoring said base to one of the track rails on which the car is adapted to stand in the dumping operation, said anchoring means extending below said track rail and having anchoring engagement therewith below the wheel bearing surface of said rail, a vertically swinging arm having its lower end pivotally mounted on said base, a power driven vibrator head mounted on the upper end of said swinging arm, said vibrator head comprising a drive shaft, a driven sheave mounted on said shaft, a hydraulic ram connected between said base and said swinging arm for swinging said arm to cause said vibratory head to move into and out of engagement with the lside of a dumping car, a platform having pivoted mounting at one end on said base and having its other end adapted for up and down tilting, a power plant on said platform, a hydraulic pump on said platform driven by said power plant and connected to supply liquid to said hydraulic ram, a drive sheave driven by said power plant and mounted adjacent the tilting end of said platform, a belt connecting said drive sheave with the driven sheave of said vibratory head, and spring means yieldably supporting the tilting end of said platform.

4. In a vibrating device for vibrating railroad dump cars in the dumping operation, the combination of a base adapted to occupy a stationary position alongside the railroad track at the point of dumping, anchoring means extending from said base below the rails and between the ties of the track for effecting anchored connection of said base to one of said rails below the wheel bearing surface of the rail, a vertically swinging arm pivotally connected at its lower end to said base, a hydraulic ram connected between said base and said arm for swinging said arm, and a power driven vibrator mounted on the upper end of said arm and adapted to be forcibly pressed against the side of the car in the vibrating operation, said vibrating head comprising a housing, a 'shaft passing transversely therethrough7 a rotatable eccentric vibrator mounted on said shaft, and an anti-friction roller bearing mounted between said eccentric vibrator and said housing through which the eccentric vibrator transmits vibrations to said housing,

5. In a car vibrator, the combination of a base structure, an arm movably mounted on said base structure, a guide head carried by said arm, a vibrator head movably carried by said guide head, spring means interposed between said guide head and vibrator head to act along the vibratory axis of said vibrator head, rubber cushioning means'between said heads for accommodating tilting of said vibrator head relatively to said guide head, and a hydraulic ram operatively connected between lsaid base structure and said arm for moving said vibrator head into and out of engagement with the side of a car body.

6. .In a car vibrator for vibrating a railroad dump car standing on a railroad track, said car having truck springs, the combination of a base structure, a support movably carried by said base structure, a vibrator head carried by said movable support, power applicator between lsaid base structure and said movable support for moving said vibrator head into and out of engagement with the side al? of a car body, spring means etfective between said vibrator head and said power applicator, and means for anchoring said base structure to the railroad track whereby said vibrator head acts between said spring means at one end and the car truck springs at the other end.

7. In a portable car vibrator of the class described adapted to be moved to an operative position alongside a railroad dump car for imparting vibratory movement to the side of the dump car so as to assist in the dumping of the load therefrom, the combination of a vehicle frame, supporting wheels on which said vehicle frame can be moved into and out of operative position alongside the railroad rails on which the dumping is to occur, an anchoring tongue projecting from one end of said vehicle frame adapted to be inserted crosswise below the plane of said railroad rails and between the ties supporting said rails, readily releasable anchoring means for anchoring said tongue to one of the railroad rails after it has been thus inserted below the plane of said rails, the location of said anchoring tongue below the plane of said rails permitting movement of the dump car along said rails after said tongue has been anchored to the track, a movable carrier movably mounted on said vehicle frame, a vibratory head mounted on said movable carrier comprising rotary eccentric means and a power driven shaft for driving said eccentric means, a hydraulic ram connected between said vehicle frame and said movable carrier and operative through said movable carrier to bring said vibratory head into high pressure engagement against the side surface of the dump car, the anchored engagement of said anchoring tongue against said railroad rail sustaining the reaction thrust of said high pressure engagement of said vibratory head against the side surface of the car, a hydraulic pump on said vehicle frame for supplying liquid under pressure to said hydraulic ram, and a source of power on said vehicle frame for transmitting power to the power driven shaft of said vibratory head and to said hydraulic pump.

8. In a portable car vibrator of the class described adapted to be moved into an operative position alongside of a railroad dump car for imparting vibratory movement to the side of the dump car so as to assist in the dumping of the load therefrom, the combination of a vehicle frame, supporting wheels on which said vehicle frame can be moved into and out of operative position alongside the railroad rails on which the dumping is to occur, an anchoring tongue projecting from one end of said vehicle frame adapted to be inserted crosswise below the plane of said railroad rails and between adjacent ties supporting said rails, readily releasable anchoring means for anchoring said tongue to one of the railroad rails after it has been thus inserted below the plane of said rails, the location of said anchoring tongue below the plane of said rails permitting movement of the dump car along said rails after said tongue has been anchored to the track, a vertically swinging arm having its lower end pivotally mounted on said base, a power driven vibrator head mounted on the upper end of said swinging arm, said vibrator head comprising a power driven shaft and eccentric means rotated by said shaft, a hydraulic ram connected between said vehicle frame and said swinging arm and operative through said swinging arm to bring said vibrator head into high pressure engagement against the side surface. of the dump car, the anchored engagement of said anchoring tongue against said railroad rail sustaining the reaction thrust of said high pressure engagement of said vibrator head against the side surface of the car, a hydraulic pump on said vehicle frame for supplying liquid under Pressure to said hydraulic ram, a source of power on said vehicle frame for transmitting power to the power driven shaft of said vibrator head and to said hydraulic pump, and movable axle means for said supporting wheels for enabling said vehicle frame to be lowered relatively to said wheels when said anchoring tongue is to be inserted crosswise below said railroad rails into anchored position.

v9. In a portable car vibrator of the class described adapted to be moved into operative position alongside a railroad dump car for imparting vibratory movement to the side of the dump car so as to assist in the dumping of the load therefrom, the combination of a vehicle frame, supporting wheels on which said vehicle frame can be moved into and out of operative position alongside the railroad rails on which the dumping is to occur, an anchoring tongue projecting from one end of said vehicle frame adapted to be inserted crosswise below said railroad rails and between the ties supporting said rails, anchoring means for anchoring said tongue to one of the railroad rails after it has been thus inserted below said rails, a vibrator head mounted on said vehicle frame adapted to be held in pressure engagement against the side surface of the dump car, the anchored engagement of said anchoring tongue against said railroad rail sustaining the reaction thrust of said pressure engagement of said vibrator head against the side surface of the car, said vibrator head comprising a power driven shaft and eccentric means rotated thereby, and a source of power on said vehicle frame for transmitting power to said power driven shaft.

10. A car vibrator adapted to be placed in operative position alongside a railroad car for imparting vibratory movement to the side of the dump car so as to assist in the dumping of a load therefrom, the combination of a bed structure adapted to be placed in operative position alongside the railroad rails on which the dumping is to occur, an anchoring tongue projecting from one end of said bed structure adapted to be inserted crosswise below the plane of said railroad rails, anchoring means for anchoring said tongue to one of the railroad rails after it has been thus inserted below the plane of said rails, the location of said anchoring tongue below the plane of said rails permitting movement of the dump car along said rails after said tongue has been anchored to the track, a movable carrier movably mounted on said bed structure, a vibratory head mounted on said movable carrier, a hydraulic ram connected between said bed structure and said movable carrier and operative through said movable carrier to bring said vibratory head into high pressure engagement against the side surface of the dump car, the anchored engagement of said anchoring tongue against said railroad rail sustaining the reaction thrust of said high pressure engagement of said vibratory head against the side surface of the car, a hydraulic pump on said bed structure for supplying liquid under pressure to said hydraulic ram, and a source of power on said bed structure for transmitting power to said vibratory head and to said hydraulic pump.

11. In a car vibrator for imparting vibratory movement to the side of a railroad dump car to assist in the dumping of a load therefrom, the combination of a bed member in operative position alongside the railroad rails on which the dumping is to occur, an anchoring tongue projecting from one end of said bed member adapted to be inserted crosswise below the plane of said railroad rails, anchoring means for anchoring said tongue to one of the railroad rails after it has been thus inserted below the plane of said rails, the location of said anchoring tongue below the plane of said rails permitting movement of the dump car along said rails after said tongue has been anchored to the track, a vibratory head mounted on said bed member, pressure creating mechanism connected between said bed member and said vibratory head for bringing said vibratory head into high pressure engagement against the side surface of the dump car, the anchored engagement of said anchoring tongue against said railroad rail sustaining the 10 reaction thrust of said high pressure engagement of said vibratory head against the side surface of the car.

12. In a car vibrator for imparting vibratory movement to the side of a railroad dump car so as to assist in the dumping of the load therefrom, the combination of a bed structure adapted to be located in operative position alongside the railroad rails on which the dumping is to occur, an anchoring tongue projecting from one end of said bed structure adapted to be inserted crosswise below the plane of said railroad rails, anchoring means for anchoring said tongue to one of the railroad rails after it has been thus inserted below the plane of said rails, the location of said anchoring tongue below the plane of said rails permitting movement of the dump car along said rails after Said tongue has been anchored to the track, a guide head movably mounted on said bed structure, a vibrator head movably carried by said guide head, a hydraulic ram operatively connected between said bed structure and said guide head and movable through said guide head to bring said vibrator head into high pressure engagement against the side surface of the dump car, the anchored engagement of said anchoring tongue against said railroad rail sustaining the reaction thrust of said high pressure engagement of said vibratory head against the side surface of the car, and cushioning means between said guide head and said vibrator head for accommodating tilting movement of said vibrator head relatively to said guide head in the vibratory engagement against the side surface of the car.

13. In a car vibrator for vibrating railroad dump cars having truck springs on which the load carrying bed is mounted, whereby to aid in the dumping of the car bed, the combination of a base structure positioned alongside the railroad rails on which the dumping is to occur, an anchoring tongue extending from one end of said base structure below the plane of the railroad rails, anchoring means for anchoring said tongue to one of said railroad rails, the location of said anchoring tongue below the plane of said rails permitting movement of the dump car along said rails after said tongue has been anchored to the track, a movable carrier movably mounted on said base structure, a vibratory head mounted on said movable carrier, pressure creating mechanism connected between said base structure and said movable carrier for moving said vibratory head into high pressure engagement against the side surface of the railroad dump car, the anchored engagement of the anchoring tongue against said railroad rails sustaining the reaction thrust of said high pressure engagement of said vibratory head against the side surface of the car, and spring means eiective between said vibratory head and said base structure whereby said vibratory head acts between said spring means at one end and the car truck springs at the other end.

References Cited in the le of this patent UNITED STATES PATENTS 1,218,580 Perfect Mar. 6, 1917 1,749,806 Fisher Mar. 11, 1930 2,185,850 Jackson Jan. 2, 1940 2,226,875 Rexford Dec. 31, 1940 2,248,182 Mateer July 8, 1941 2,323,479 McCullough July 6, 1943 2,368,353 Fulper Jan. 30, 1945 2,621,813 Bauerle et al. Dec. 16, 1952 2,698,102 Yeager Dec. 28, 1954 2,748,959 Plant June 5, 1956 

